Add sleep command to playwright tests

This should allow playwright to finish setting up before running tests

Author: dragid10

.github/workflows/playwright.yml

@@ -31,5 +31,11 @@ jobs:
           bundler-cache: true
       - name: Jekyll detached and pytest
         run: |
+          # Start up local copy of site
           bundle exec jekyll serve --detach
+
+          # Sleep for 10 secs to allow Jekyll to start
+          sleep 10
+
+          # Run tests
           python -m pytest